CVE-2026-43440 (GCVE-0-2026-43440)

Vulnerability from cvelistv5 – Published: 2026-05-08 14:22 – Updated: 2026-05-08 14:22
VLAI?
Title
net/mana: Null service_wq on setup error to prevent double destroy
Summary
In the Linux kernel, the following vulnerability has been resolved: net/mana: Null service_wq on setup error to prevent double destroy In mana_gd_setup() error path, set gc->service_wq to NULL after destroy_workqueue() to match the cleanup in mana_gd_cleanup(). This prevents a use-after-free if the workqueue pointer is checked after a failed setup.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: fa3c2f8d9152344a478abb847081c1b5f84a94f5 , < 59489ce60d7412ed82fb1d8002faa3102dcd4916 (git)
Affected: a9a7c3203fdc4d4a8d8a7a3b1ed05d2bb4c6e77e , < 6c92392602b451e3869f15ab685f8f650e942b13 (git)
Affected: f975a0955276579e2176a134366ed586071c7c6a , < 87c2302813abc55c46485711a678e3c312b00666 (git)
Create a notification for this product.
    Linux Linux Affected: 6.18.16 , < 6.18.19 (semver)
Affected: 6.19.6 , < 6.19.9 (semver)
Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/microsoft/mana/gdma_main.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "59489ce60d7412ed82fb1d8002faa3102dcd4916",
              "status": "affected",
              "version": "fa3c2f8d9152344a478abb847081c1b5f84a94f5",
              "versionType": "git"
            },
            {
              "lessThan": "6c92392602b451e3869f15ab685f8f650e942b13",
              "status": "affected",
              "version": "a9a7c3203fdc4d4a8d8a7a3b1ed05d2bb4c6e77e",
              "versionType": "git"
            },
            {
              "lessThan": "87c2302813abc55c46485711a678e3c312b00666",
              "status": "affected",
              "version": "f975a0955276579e2176a134366ed586071c7c6a",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/microsoft/mana/gdma_main.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "6.18.19",
              "status": "affected",
              "version": "6.18.16",
              "versionType": "semver"
            },
            {
              "lessThan": "6.19.9",
              "status": "affected",
              "version": "6.19.6",
              "versionType": "semver"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.19",
                  "versionStartIncluding": "6.18.16",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.19.9",
                  "versionStartIncluding": "6.19.6",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/mana: Null service_wq on setup error to prevent double destroy\n\nIn mana_gd_setup() error path, set gc-\u003eservice_wq to NULL after\ndestroy_workqueue() to match the cleanup in mana_gd_cleanup().\nThis prevents a use-after-free if the workqueue pointer is checked\nafter a failed setup."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-08T14:22:09.334Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/59489ce60d7412ed82fb1d8002faa3102dcd4916"
        },
        {
          "url": "https://git.kernel.org/stable/c/6c92392602b451e3869f15ab685f8f650e942b13"
        },
        {
          "url": "https://git.kernel.org/stable/c/87c2302813abc55c46485711a678e3c312b00666"
        }
      ],
      "title": "net/mana: Null service_wq on setup error to prevent double destroy",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-43440",
    "datePublished": "2026-05-08T14:22:09.334Z",
    "dateReserved": "2026-05-01T14:12:56.009Z",
    "dateUpdated": "2026-05-08T14:22:09.334Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-43440",
      "date": "2026-05-09",
      "epss": "0.00017",
      "percentile": "0.04127"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-43440\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2026-05-08T15:16:56.420\",\"lastModified\":\"2026-05-08T15:16:56.420\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnet/mana: Null service_wq on setup error to prevent double destroy\\n\\nIn mana_gd_setup() error path, set gc-\u003eservice_wq to NULL after\\ndestroy_workqueue() to match the cleanup in mana_gd_cleanup().\\nThis prevents a use-after-free if the workqueue pointer is checked\\nafter a failed setup.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/59489ce60d7412ed82fb1d8002faa3102dcd4916\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/6c92392602b451e3869f15ab685f8f650e942b13\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/87c2302813abc55c46485711a678e3c312b00666\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.